Final answer:
Roman arches led to various structural forms: the Dome consists of arches around a central point, the Barrel vault is a series of arches placed back to back, and the Groined vault is created by intersecting arches at right angles.
Step-by-step explanation:
The Roman arch is a foundational concept in the history of architecture, giving rise to multiple structural forms. Matching the right-hand column descriptions with the correct type of Roman arch:
- Dome - Arches around a central point
- Barrel vault - Arches back to back in a row
- Groined vault - Arches at right angles to each other
The barrel vault is created by extending an arch in a linear direction, forming a tunnel-like structure. By crossing two barrel vaults, a groined vault is formed, which opens up the interior space more effectively. Lastly, the dome is created by spinning the arch on its axis to encompass an area around a central point, providing an expansive and open architectural structure.